Amazon has the Sleep Innovations Twin 10 Inch Cooling Gel Memory Foam Mattress for only $157.50 Shipped! (Reg. $175) This has really great reviews. Gel memory foam top layer and supportive middle layer with airflow channels provide a cooling effect, helping to maintain a comfortable climate while you sleep.Keep in mind, Amazon pricing can change at any time! Don’t wait to purchase this deal or it might be gone when you come back!